Vinogradov, Yury, Kozyrev, Anatoliy, Asming, Vladimir. THE NEW 3D VELOCITY MODEL OF KHIBINY AND LOVOZERO MOUNTAIN MASSIFS FOR ACCURATE LOCATION ROCK BURSTS AND EXPLOSIONS IN UNDERGROUND MINES AND QUARRIES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, 2015, pp. 1051-1058. https://doi.org/10.5593/sgem2015/b13/s5.136